If you’re a big fan of superstition and the supernatural, you are surely in your element this Friday the 13th. In celebration of this creepy calendar day, TED-Ed has gathered up five of our scariest lessons, sure to get you in the spirit of all things spooky.

Sometimes our biggest fears aren’t the fictional characters we imagine creeping under our beds (or the terrifying zombie bugs in our backyard). In fact, the most common fear reported by adults is public speaking! If talking to a crowd makes you feel like you’re fighting for your life, you’re not alone. But the better you understand your body’s reaction, the more likely you are to overcome it. In this lesson, Mikael Cho advises how to trick your brain and steal the show.